In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Example Input: Sentence: Density describes how much matter is in a certain amount of space. Question: What describes how much matter is in a certain amount of space?
Example Output: density

Example Input: Sentence: Liquid nitrogen is used for cooling detectors of infrared telescopes. Question: What is used for cooling detectors of infrared telescopes?
Example Output: liquid nitrogen

Example Input: Sentence: As the distance from earth to the star decreases, its apparent brightness increases statement correctly describes a relationship between the distance from earth and a characteristic of a star. Question: Which statement correctly describes a relationship between the distance from Earth and a characteristic of a star?
Example Output:
As the distance from Earth to the star decreases, its apparent brightness increases.

